- Library Home /
- Search Collections /
- Open Collections /
- Browse Collections /
- UBC Theses and Dissertations /
- In vitro comparison of retrieval efficiency and capacity...
Open Collections
UBC Theses and Dissertations
UBC Theses and Dissertations
In vitro comparison of retrieval efficiency and capacity for three endodontic obturation materials Braniste, Marina
Abstract
GuttaCore® is advertised as rendering high-quality carrier-based obturation and being retreatable with unprecedented ease. This study’s aim was to evaluate time required for ProTaper®Retreatment files to remove three obturation materials in mesio-buccal (MB) canals and distal (D) canals of lower molars, and quantify residual material left on canal walls following retreatment. MB and D canals of first and second lower molars were standardized according to type, length, curvature and quadrant, and divided into three obturation groups (NMB=15; ND=12). MB canals were instrumented to 25/.08 (ProTaper®Universal F2) and D to 30/.09 (ProTaper®Universal F3). Canals were obturated with vertically compacted gutta-percha cones (GP), Thermafil®Plus (T) or GuttaCore® (GC). Teeth were stored for two weeks allowing sealer setting. Retreatment time to reach working length with ProTaper®Universal Retreatment files (D1, D2, D3) and with last ProTaper®Universal file used during original instrumentation was recorded in seconds. Roots were then sectioned longitudinally, visualized using 8.0x magnification, and residual gutta-percha along canals was quantified using a five-point grading system. A statistical significant difference in retreatment time between GC group and T group in MB canals was found (P = 0.026). No statistical significant difference in retreatment time was detected amongst the materials (P > 0.05). No statistical significant difference was found in residual obturation material between groups both in MB and D canals. GC group is more efficient to remove than T group in MB canals. No difference was found in the obturation removal amongst the three groups in the wider D canals. All groups exhibited residual gutta-percha along canal walls; further instrumentation is needed for thorough material removal.
Item Metadata
Title |
In vitro comparison of retrieval efficiency and capacity for three endodontic obturation materials
|
Creator | |
Publisher |
University of British Columbia
|
Date Issued |
2013
|
Description |
GuttaCore® is advertised as rendering high-quality carrier-based obturation and being retreatable with unprecedented ease. This study’s aim was to evaluate time required for ProTaper®Retreatment files to remove three obturation materials in mesio-buccal (MB) canals and distal (D) canals of lower molars, and quantify residual material left on canal walls following retreatment.
MB and D canals of first and second lower molars were standardized according to type, length, curvature and quadrant, and divided into three obturation groups (NMB=15; ND=12). MB canals were instrumented to 25/.08 (ProTaper®Universal F2) and D to 30/.09 (ProTaper®Universal F3). Canals were obturated with vertically compacted gutta-percha cones (GP), Thermafil®Plus (T) or GuttaCore® (GC). Teeth were stored for two weeks allowing sealer setting. Retreatment time to reach working length with ProTaper®Universal Retreatment files (D1, D2, D3) and with last ProTaper®Universal file used during original instrumentation was recorded in seconds. Roots were then sectioned longitudinally, visualized using 8.0x magnification, and residual gutta-percha along canals was quantified using a five-point grading system.
A statistical significant difference in retreatment time between GC group and T group in MB canals was found (P = 0.026). No statistical significant difference in retreatment time was detected amongst the materials (P > 0.05). No statistical significant difference was found in residual obturation material between groups both in MB and D canals.
GC group is more efficient to remove than T group in MB canals. No difference was found in the obturation removal amongst the three groups in the wider D canals. All groups exhibited residual gutta-percha along canal walls; further instrumentation is needed for thorough material removal.
|
Genre | |
Type | |
Language |
eng
|
Date Available |
2013-07-20
|
Provider |
Vancouver : University of British Columbia Library
|
Rights |
Attribution-NonCommercial-NoDerivs 3.0 Unported
|
DOI |
10.14288/1.0073991
|
URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
|
Graduation Date |
2013-11
|
Campus | |
Scholarly Level |
Graduate
|
Rights URI | |
Aggregated Source Repository |
DSpace
|
Item Media
Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivs 3.0 Unported